TY - JOUR AU - Ryan, Kelly Ann AU - Babu, Pallavi AU - Easter, Rebecca AU - Saunders, Erika AU - Lee, Andy Jinseok AU - Klasnja, Predrag AU - Verchinina, Lilia AU - Micol, Valerie AU - Doil, Brent AU - McInnis, Melvin G AU - Kilbourne, Amy M PY - 2020 DA - 2020/9/22 TI - A Smartphone App to Monitor Mood Symptoms in Bipolar Disorder: Development and Usability Study JO - JMIR Ment Health SP - e19476 VL - 7 IS - 9 KW - bipolar disorder KW - momentary assessment KW - mood KW - mobile phone KW - mobile app AB - Background: There is considerable scientific interest in finding new and innovative ways to capture rapid fluctuations in functioning within individuals with bipolar disorder (BD), a severe, recurrent mental disorder associated with frequent shifts in symptoms and functioning. The use of smartphones can provide valid and real-world tools for use in measurement-based care and could be used to inform more personalized treatment options for this group, which can improve standard of care. Objective: We examined the feasibility and usability of a smartphone to capture daily fluctuations in mood within BD and to relate daily self-rated mood to smartphone use behaviors indicative of psychomotor activity or symptoms of the illness. Methods: Participants were 26 individuals with BD and 12 healthy control individuals who were recruited from the Prechter Longitudinal Study of BD. All were given a smartphone with a custom-built app and prompted twice a day to complete questions of mood for 28 days. The app automatically and unobtrusively collected phone usage data. A poststudy satisfaction survey was also completed. Results: Our sample showed a very high adherence rate to the daily momentary assessments (91% of the 58 prompts completed). Multivariate mixed effect models showed that an increase in rapid thoughts over time was associated with a decrease in outgoing text messages (β=–.02; P=.04), and an increase in impulsivity self-ratings was related to a decrease in total call duration (β=–.29; P=.02). Participants generally reported positive experiences using the smartphone and completing daily prompts. Conclusions: Use of mobile technology shows promise as a way to collect important clinical information that can be used to inform treatment decision making and monitor outcomes in a manner that is not overly burdensome to the patient or providers, highlighting its potential use in measurement-based care. SN - 2368-7959 UR - http://mental.jmir.org/2020/9/e19476/ UR - https://doi.org/10.2196/19476 UR - http://www.ncbi.nlm.nih.gov/pubmed/32960185 DO - 10.2196/19476 ID - info:doi/10.2196/19476 ER -